LFY-605 Automatic Oxygen Index Tester (Touch Screen)

National Patent Patent Number: ZL 00 2 13455.1 
Main purpose/Use 
It is used for determining the oxygen index performance of various forms of textiles (including woven, knitted, fiber, coated fabrics, non-woven fabrics, clothing, etc.), plastics, rubber, asphalt, paper, building materials (wood), etc. 
Technical indicators 
1. The entire testing process is controlled by a 10-inch touch screen (software update is available). The automation level is high. The operator only needs to input the required oxygen concentration value according to the test requirements, and the instrument can automatically track and adjust to keep the oxygen concentration stable at the set value and automatically adjust the flow rates of oxygen and nitrogen. 
2. Directly measure and display the oxygen concentration value of the sample combustion chamber. 
3. Automatic ignition mechanism: It automatically ignites according to the standard ignition operation procedure, ensuring precise, rapid, safe and reliable ignition. 
4. The software automatically processes and displays the data for each group of tests, and determines the reliability of the obtained test data. 
5. Oxygen concentration setting range: Oxygen concentration value ranges from 10% to 60% ± 0.2LOI;
6. The oxygen and nitrogen flow rates can be controlled at the set values, with a control accuracy of ± 0.01L/min. 
7. Oxygen concentration step size: Can be set from 0.1%. 
8. Burning time: 1 second to 300 seconds; 
9. Flame height: Adjustable from 15 to 20 mm; 
10. Dimensions of the quartz glass combustion tube: Inner diameter ≥ 75 mm, height ≥ 450 mm. 
11. Equipped with a dedicated touch screen for display, with automatic data processing, saving and querying functions. 
12. Environmental temperature: Room temperature to 45℃, Relative humidity: ≤ 90% 
13. User-provided: 1 oxygen cylinder (with pressure regulator), 1 nitrogen cylinder (with pressure regulator), 1 propane cylinder. 
Applicable Standards 
GB/T 5454-1997 "Test Method for Combustion Properties of Textiles - Oxygen Index Method" 
GB 20286-2006 "Requirements and Marking for Combustion Performance of Flame Retardant Products and Components in Public Places" 
GB/T 2406.2-2009 "Plastics - Oxygen Index Method for Determining Combustion Behavior - Part 2"
ASTM 2863
GB/T 10707-2008 "Determination of Combustion Properties of Rubber" 
GB/T 8924-2005 "Test Methods for Combustion Properties of Fiber-Reinforced Plastics - Oxygen Index Method" 
FZ/T 50029-2015 "Test Methods for Flame Retardant Properties of Synthetic Fiber Raw Materials - Oxygen Index Method"